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https://issues.apache.org/jira/browse/HBASE-4794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150933#comment-13150933
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Ted Yu commented on HBASE-4794:
-------------------------------
We should pass true to MetaReader.getTableRegions() in
AssignmentManager.getReopenStatus()
> Altering a tables that splits can hold the command for the CatalogJanitor
> sleep time
> ------------------------------------------------------------------------------------
>
> Key: HBASE-4794
> URL: https://issues.apache.org/jira/browse/HBASE-4794
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.0
> Reporter: Jean-Daniel Cryans
> Priority: Critical
> Fix For: 0.92.0, 0.94.0
>
>
> In AssignmentManager.getReopenStatus, it calls a version of
> MetaReader.getTableRegions that sets excludeOfflinedSplitParents to false
> meaning that the offline parents are returned. What this means is that if one
> of them was already closed before the alter command was issued (and I believe
> there are a few other cases) then the alter will hang until the
> CatalogJanitor sweeps the parent .META. row.
> Since the CJ sleep time is 5 minutes, the worst case scenario is an alter
> that takes almost 5 minutes.
> Here's an example:
> {quote}
> 925/948 regions updated.
> 920/943 regions updated.
> 913/934 regions updated.
> 912/928 regions updated.
> 912/928 regions updated.
> (5 minutes later)
> 912/928 regions updated.
> 912/928 regions updated.
> 905/918 regions updated.
> 897/906 regions updated.
> 891/892 regions updated.
> 891/891 regions updated.
> Done.
> {quote}
> I can confirm with the log that 37 parent regions were cleaned up.
> Also it's pretty nice to see how the number fluctuates up and down :)
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